Stiebel Eltron heat pump water heater
Does anyone have any experience with this particular HPWH ? I'm pretty sure it's the one that I want to install next year. Watching many videos and doing lots of reading etc it seems like they are the best in the game.
I'm highly considering the model 220E which is the 58 gallon version as the 80 gallon version will not fit in the installation area.
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That is certainly one of the big name brands.
What type and size WH do you have now? HPWH are fairly slow recovery if you need a lot of hot water.Be aware of the location of the heater also, they need a fair amount of space around them to grab heat from.
The I&O manual should go into that, maybe read it before you buy?
Bob "hot rod" Rohr
trainer for Caleffi NA
Living the hydronic dream0 -
I have a STeibel that I service. It is maybe 10 yrs old. It has worked fine except the evaporator leaked and needed replacing. Not sure anymore but I believe we got a new evaporator under warranty.
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currently making my dhw with a tankless coil in an oil fired steam boiler, no storage tank. It's only me living here with an evening shower daily and laundry / dishes once a week or so. It would live in the basement in between the oil tank and boiler. In the winter it would benefit from the oil burner exhaust/boiler heat I'm thinking. When it's steaming hot water is great, when it's on standby at 175°, hot water isn't so great, I also don't want to burn oil in the summertime for hot water anymore.
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That's great to hear. A friend of mine has an 80 gallon State HPWH and he's on his third unit, the heat pump has been the failure mode.
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Hi, Whatever brand you go with, this information about good installation practice might be useful too.
Yours, Larry
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Thanks Larry. House used to have a tank water heater so I already have 10/2 wire run over to the installation spot that's just dead ended inside of the panel. I'll just have to install the proper size breaker for whatever I go with. Piping I think should be fairly simple as well. Already have some 3/4 PEX run over to the sump pit that just follows the wet return for the steam system for my condensate line.
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If you are getting by with a tankless, I doubt you would need a 50 gallon HPWH for your limited use.
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True. My main objective though is to make this place a little bit more efficient and not burn oil in the summer anymore.
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Still uses electricity to drive the compressor and that is generated by gas/ oil coal or nuke.
But I understand tankless coils are poor for DHW.
I would think a 50 gallon if they make one would be plenty large enough
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There will be a long Return on investment … A simple electric would prob serve you better and cost A LOT less money now and later.
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The two versions they make are 58 and 80 gallons. I would go with the 58 gallon version. It will fit right in the installation spot in between the boiler and oil tank. I'm not sure how my local utility makes or buys their electricity. The domestic coil is the same age as the boiler, 1998. I would imagine that it's probably getting gunky from the well water here. I don't have any treatment on it other than a medium sediment filter.
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Valid thought. I would have to figure out the ROI time. I'm planning on living here long-term so I'm thinking the HPWH would be worth it to me. Mom and Dad own this place outright and have for just over 10 years now. I think it would be a worthy investment. My local utility the electricity isn't too expensive so I believe the HPWH would only add maybe $5 or $10 per month if that
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Plus the HP WH will make your basement colder. It has to draw the heat from somewhere.
It will blow cold air into the basement…
That being said the Stiebel ones are a lot more $$ up front. They do seem to have a better track record…also a lot less out there too.
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I'm well aware of how they work. In the winter time it should be able to pull some heat from the boiler and oil burner. If it makes it a few degrees cooler that's not an issue. It seems like that the Stiebel ones are just better built and engineered than the stuff that is engineered and built here.
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Planned installation spot :
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check for any incentives for HPWh purchase
Bob "hot rod" Rohr
trainer for Caleffi NA
Living the hydronic dream0 -
Unfortunately that link is dead
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My local utility is now offering a $1200 rebate until June 30th on the purchase of a HPWH.
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and that’s the 1st service call fee
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Since my utility bill is quite inexpensive, I'm going to take the rebate as a check which can go towards other things
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You are making good choices. Thumbs up!
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The real problem with the tankless coil is when the boiler is just on standby, I get a few minutes of good hot water in the shower and then it goes lukewarm for 10 or 15 minutes while the boiler catches up. However when the boiler is steaming, hot water is great. But it'll be nice to have 58 gallons of hot water at my disposal!
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Setting aside the anti-electricity part (come now, Ed!), I think he means he doesn't want to keep firing his massive boiler all summer to heat a few gallons of water, which is completely reasonable.
NJ Steam Homeowner.
Free NJ and remote steam advice: https://heatinghelp.com/find-a-contractor/detail/new-jersey-steam-help/
See my sight glass boiler videos: https://bit.ly/3sZW1el0 -
That is correct Paul. I generally will burn close to a tank of oil over the summer for hot water. My peak electric bill in the summertime is generally just under $200 running a couple of 5,000 BTU window air conditioners in the guest room and master bedroom. My shower generally takes 10 minutes, so it doesn't make sense for me to use the domestic coil anymore.
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I know people are saying you won't have a good ROI for this, but I assure you, heating water with HP is extremely cheap. Just as you said, you will harvest otherwise wasted heat from your boiler in the winter, and in the summer of course, there is plenty of heat to grab.
Even though your amount of hot water usage is very little, probably like only $600 per year for even a resistance electric water heater, you should expect to use only 25% that much with a HP.
And of course both of those electric options are just plain way better than using your massive boiler to do it.
NJ Steam Homeowner.
Free NJ and remote steam advice: https://heatinghelp.com/find-a-contractor/detail/new-jersey-steam-help/
See my sight glass boiler videos: https://bit.ly/3sZW1el0 -
A friend of mine has a heat pump water heater and his only cost him about $5 to $10 a month
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